Larry Grey is a former suitor of Lady Sybil who appears at Downton in 1920. He's so jealous and angry at her marriage to Tom Branson, he drugs Tom's drink during one dinner which sends Tom wild, voicing his views and making everyone, including Sybil, upset. Fortunately, Sir Anthony Strallan exposes Larry's actions, and Larry quickly disappears, and Tom is forgiven by the Crawleys, who knows it wasn't his fault.

Larry is portrayed by actor Charlie Anson.

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